As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 605 - ORD-LAS - AIR TURNBACK - AFTER TAKEOFF, CREW RECEIVED LANDING GEAR RETRACTION ECAM MESSAGE 'LANDING GEAR DOORS NOSE WILL NOT CLOSE COMPLETELY'. RECYCLED GEAR TWICE AND PROBLEM PERSISTED. MAINTENANCE REMOVED AND REPLACED THE NOSE LANDING GEAR UPLOCK ASSEMBLY. ALL FUNCTIONAL CHECKS WERE GOOD.